How does the author use foreshadowing in The White Horses of Vienna?

Boyle uses foreshadowing early in the story when she describes the cleanliness of the doctor's home in detail: "Everything was as neat and clean as wax, for the doctor was a savagely clean man." A description of the doctor's personal hygiene finishes the picture, "a coarse, reddish, wellscrubbed skin through which the gold hairs sprang." When we later come to understand that the doctor is a Nazi sympathizer, we see that his appearance symbolizes the Nazi strategy of ethnic cleansing.